package com.xw.roomWeb.web.userInfo;

import java.awt.image.BufferedImage;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.danga.MemCached.MemCachedClient;
import com.google.code.kaptcha.Constants;
import com.google.code.kaptcha.Producer;
@Controller
@RequestMapping("/chack")
public class CaptchaController {
	@Autowired
	private Producer captchaProducer = null;

	//@Autowired  
    //private MemCachedClient  memCachedClient;

	@RequestMapping("/captcha-image")
	public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
		response.setDateHeader("Expires", 0);// 禁止服务器端缓存
		// 设置标准的 HTTP/1.1 no-cache headers.
		response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
		// 设置IE扩展 HTTP/1.1 no-cache headers (use addHeader).
		response.addHeader("Cache-Control", "post-check=0, pre-check=0");
		response.setHeader("Pragma", "no-cache");// 设置标准 HTTP/1.0 不缓存图片
		response.setContentType("image/jpeg");// 返回一个 jpeg 图片，默认是text/html(输出文档的MIMI类型)
		String capText = captchaProducer.createText();// 为图片创建文本

		// 将文本保存在session中，这里就使用包中的静态变量吧
		request.getSession().setAttribute(Constants.KAPTCHA_SESSION_KEY, capText);

		BufferedImage bi = captchaProducer.createImage(capText); // 创建带有文本的图片
		ServletOutputStream out = response.getOutputStream();
		// 图片数据输出
		ImageIO.write(bi, "jpg", out);
		try {
			out.flush();
		} finally {
			out.close();
		}

		System.out.println("Session 验证码是：" + request.getSession().getAttribute(Constants.KAPTCHA_SESSION_KEY));
		return null;
	}
}
